Alex Smith got his nose bloodied after a run that was called back on a penalty in the fourth quarter. The San Francisco 49ers defeated the Detroit Lions 27-19 at Candlestick Park Sunday September 16, 2012.

Photo: Brant Ward, The Chronicle

Alex Smith got his nose bloodied after a run that was called back...

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49er quarterback Alex Smith, 11 talks with reporters as Media Day gets underway at the Mercedes-Benz Superdome the site of this year's Superbowl between the San Francisco 49ers and the Baltimore Ravens in New Orleans, La. on Tues. Jan. 29, 2013.

Photo: Michael Macor, The Chronicle

49er quarterback Alex Smith, 11 talks with reporters as Media Day...

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Quarterback Alex Smith leaves the field after a game against the visiting Detroit Lions at Candlestick Park in San Francisco, Calif. on Sunday, Sept. 16, 2012. The Niners defeated the Lions 27-19.

Photo: Stephen Lam, Special To The Chronicle

Quarterback Alex Smith leaves the field after a game against the...

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San Francisco 49ers quarterback Colin Kaepernick (7) and quarterback Alex Smith (11) warm up before an NFL football game against the New Orleans Saints at the Louisiana Superdome in New Orleans, Sunday, Nov. 25, 2012.

Photo: Gerald Herbert, Associated Press

San Francisco 49ers quarterback Colin Kaepernick (7) and...

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San Francisco 49ers quarterback Alex Smith listens during a news conference at the NFL football team's training facility in Santa Clara, Calif., Thursday, May 10, 2012.

Photo: Paul Sakuma, Associated Press

San Francisco 49ers quarterback Alex Smith listens during a news...

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San Francisco 49ers quarterback Alex Smith warms up before an NFL football game against the New York Giants in San Francisco, Sunday, Oct. 14, 2012.

Photo: Marcio Jose Sanchez, Associated Press

San Francisco 49ers quarterback Alex Smith warms up before an NFL...

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Quarterback Alex Smith (11) during the first quarter of the San Francisco 49ers game against the St. Louis Rams at Candlestick Park in San Francisco, Calif., on Sunday November 11, 2012.

The 49ers can't finalize a trade involving quarterback Alex Smith until March 12, but they reportedly feel confident about crossing off that item from their to-do list for the offseason.

According to CBS Sports, the 49ers have told other teams that a deal is "effectively complete." It is not known to whom the 49ers would trade Smith, or what they would net in return. It also is not known whether the Niners are circulating a-deal-is-all-but-complete talk to stimulate interest in the trade market. Finally, the 49ers or the mystery team could back out of a handshake deal at any time with the start of the league year more than two weeks away.

Two logical trade partners, the Jaguars and Browns, are not involved, according to reports from the Florida Times-Union and Cleveland Plain Dealer.

Kansas City is viewed as another logical landing spot for Smith. Before the Super Bowl, ESPN analyst Trent Dilfer, a former teammate and a close friend of Smith's, told The Chronicle that new Chiefs head coach Andy Reid "really likes Alex." According to Dilfer, Reid, then with the Eagles, courted Smith when he was a free agent in 2012.

The Chiefs went 2-14 last season. Matt Cassel and Brady Quinn, a pending free agent, each started eight games. The duo had eight touchdowns and 20 interceptions and posted a 63.9 passer rating. Kansas City is not expected to use the No. 1 overall pick on a quarterback.